Get more firepower from your M-1500 or your Weatherby Vanguard. These removable magazines from Adaptive Technologies, Inc. are available in 10 round capacities for your .223 or .308 caliber Howa M-1500 or Weatherby Vanguard, with .22-250. Made for target shooters and varmint hunters, these polymer body magazines allow you to turn your four round box magazine into a high capacity detachable. Available for aftermarket conversions only, the magazines come with a special trigger guard housing that replaces the existing floorplate of your Howa M-1500 or Vanguard. Will fit Smith & Wesson and Mossberg Howas.